/**  * Created by wangshihui on 2015/11/30.  * 上传文件  * url：.....   method：post   参数：file   接口给的参数：file 就是表单的key，传给mFilePartName;   这是个测试类，测试上传头像没有问题，适合只上传单个文件的场景  */ public class MultipartRequest extends Request<JSONObject> {   PRivate String mHeader;   private Map<String, String> mMap;   private String cookieFromResp = "";   private Map<String, String> headerMap = new HashMap<>();   private MultipartEntITy entity = new MultipartEntity();   private final Response.Listener<JSONObject> MListener;   private final File mFilePart;   private String mFilePartName;    /**    * @param url    * @param listener    * @param errorListener    * @param file_name    * @param file    */   public MultipartRequest(String url, Response.Listener<JSONObject> listener, Response.ErrorListener errorListener, String file_name,File file)   {     suPEr(Method.POST, url, errorListener);     mListener = listener;     mFilePart = file;     mFilePartName=file_name;     buildMultipartEntity();   }    /**    * 添加文件参数    */   private void buildMultipartEntity()   {     entity.addPart(mFilePartName, new FileBody(mFilePart));   }    @override   public String getBodyContentType()   {     return entity.getContentType().getValue();   }    @Override   public byte[] getBody() throws AuthFailureError   {     ByteArrayOutputStream bos = new ByteArrayOutputStream();     try     {       entity.writeTo(bos);     }     catch (IOException e)     {       VolleyLOG.e("IOException writing to ByteArrayOutputStream");     }     return bos.toByteArray();   }    /**    * @param response    * @return    */   @Override   protected Response<JSONObject> parseNetworkResponse(NetworkResponse response)   {     try {     JSONObject jsonObject;     System.out.println(response.headers.toString());     if (response.data.length != 0) {       String jsonString = new String(response.data, HttpHeaderParser.parseCharset(response.headers));       jsonObject = new JSONObject(jsonString);     } else {       jsonObject = new JSONObject();     }     //获取数据头     mHeader = response.headers.toString();     //提取Cookie(JSESSIONID)     Pattern pattern = Pattern.COMpile("Set-Cookie=.*&#63;;");     Matcher matcher = pattern.matcher(mHeader);     if (matcher.find()) {       cookieFromResp = matcher.group();       cookieFromResp = cookieFromResp.substring(11, cookieFromResp.length() - 1);       System.out.println("Cookie: " + cookieFromResp);     }     jsonObject.put("Cookie", cookieFromResp);     return Response.success(jsonObject,         HttpHeaderParser.parseCacheHeaders(response));   } catch (UnsupportedEncodingException e) {     return Response.error(new ParseError(e));   } catch (JSONException je) {     return Response.error(new ParseError(je));   }   }    /**    * @param response    */   @Override   protected void deliverResponse(JSONObject response)   {     mListener.onResponse(response);   }    @Override   protected Map<String, String> getParams() throws AuthFailureError {     return mMap;   }    /**    * @return    * @throws AuthFailureError    */   @Override   public Map<String, String> getHeaders() throws AuthFailureError {     return headerMap;   }    /**    * @return    */   @Override   public Retrypolicy getRetryPolicy() {     RetryPolicy retryPolicy = new DefaultRetryPolicy(5000, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT);     return retryPolicy;   }    /**    * @param cookie    */   //将Cookie加入数据头   public void setSendCookie(String cookie) {     headerMap.put("Cookie", cookie);   } }  

 //指定url路径 String url = "http://182.92....."; MultipartRequest multipartRequest = new MultipartRequest(     url, new Response.Listener<JSONObject>() {   @Override   public void onResponse(JSONObject response) {     saveSessionID(response);       } }, new Response.ErrorListener() {   @Override   public void onErrorResponse(VolleyError e) {     Log.e(TAG, e.getMessage(), e);     try {       byte[] htmlBodyBytes = e.networkResponse.data;       Log.e(TAG, new String(htmlBodyBytes), e);     } catch (Exception e1) {       e1.printStackTrace();     }     ToastUtil.showShortToast(UsercenterActivity.this, "网络连接异常");   } }, "file", mSelectedPictureFile); multipartRequest.setSendCookie(loadSessionID()); multipartRequest.setTag(TAG); client.addTask(multipartRequest); 

 public class AsynHttpClient {    //volley的请求队列   private RequestQueue requestQueue;   //保证全局变量是单一的   private static AsynHttpClient instance;    private Context mContext;    private AsynHttpClient(Context context) {     requestQueue = Volley.newRequestQueue(context);     this.mContext = context;   }   /**    * 单列模式，让AsynHttpClient在整个项目中保持只有一个    * @param context    * @return    */   public static AsynHttpClient getInstance(Context context) {     if (instance==null){       synchronized (AsynHttpClient.class){         if (instance==null){           instance=new AsynHttpClient(context);         }       }     }     return instance;   }    /**    * 添加任务到volley的请求队列中去，并不会立即执行    * @param task    */   public void addTask(Request task){     requestQueue.add(task);   }    public RequestQueue getRequestQueue() {     return requestQueue;   } }